This document is a publication of a new patent application filed with the USPTO. It describes a communication method and apparatus, specifically detailing a terminal's process for receiving Downlink Control Information (DCI) from a base station, identifying HARQ-ACK information based on priority, and transmitting a HARQ-ACK codebook. The application was filed by the Electronics and Telecommunications Research Institute and lists Cheul Soon KIM, Jae Heung KIM, Sung Hyun MOON, Jung Hoon LEE, and Sung Cheol CHANG as inventors.

As this is a patent application, it does not impose direct regulatory obligations or compliance deadlines on entities. However, it represents a new development in communication technology that may influence future standards or product development. Companies operating in the telecommunications and networking sectors should be aware of this filing as it pertains to intellectual property in this domain.